/**
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.exoplatform.applicationregistry.webui.component;

import java.util.List;

import org.exoplatform.application.gadget.Gadget;
import org.exoplatform.application.gadget.GadgetRegistryService;
import org.exoplatform.commons.serialization.api.annotations.Serialized;
import org.exoplatform.portal.webui.application.GadgetUtil;
import org.exoplatform.web.application.ApplicationMessage;
import org.exoplatform.webui.application.WebuiRequestContext;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.core.UIApplication;
import org.exoplatform.webui.core.lifecycle.UIFormLifecycle;
import org.exoplatform.webui.event.Event;
import org.exoplatform.webui.event.Event.Phase;
import org.exoplatform.webui.event.EventListener;
import org.exoplatform.webui.form.UIForm;
import org.exoplatform.webui.form.UIFormStringInput;
import org.exoplatform.webui.form.validator.MandatoryValidator;
import org.exoplatform.webui.form.validator.URLValidator;

/**
 * Created by The eXo Platform SAS Author : Pham Thanh Tung thanhtungty@gmail.com Jul 4, 2008
 */

@ComponentConfig(lifecycle = UIFormLifecycle.class, template = "system:/groovy/webui/form/UIForm.gtmpl", events = {
        @EventConfig(listeners = UIAddGadget.AddActionListener.class),
        @EventConfig(listeners = UIAddGadget.CancelActionListener.class, phase = Phase.DECODE) })
@Serialized
public class UIAddGadget extends UIForm {

    static final String FIELD_URL = "url";

    public UIAddGadget() throws Exception {
        addUIFormInput(new UIFormStringInput(FIELD_URL, null, null).addValidator(MandatoryValidator.class).addValidator(
                URLValidator.class));
    }

    public static class AddActionListener extends EventListener<UIAddGadget> {

        public void execute(Event<UIAddGadget> event) throws Exception {
            UIAddGadget uiForm = event.getSource();
            WebuiRequestContext context = event.getRequestContext();
            GadgetRegistryService service = uiForm.getApplicationComponent(GadgetRegistryService.class);
            String url = uiForm.getUIStringInput(FIELD_URL).getValue();
            String name = "gadget" + url.hashCode();
            UIGadgetManagement uiManagement = uiForm.getParent();
            // check url exist
            boolean urlExist = checkUrlExist(uiManagement.getGadgets(), url);
            if (urlExist == true) {
                UIApplication uiApp = context.getUIApplication();
                uiApp.addMessage(new ApplicationMessage("UIAddGadget.label.urlExist", null));
                return;
            }
            Gadget gadget;
            try {
                gadget = GadgetUtil.toGadget(name, url, false);
            } catch (Exception e) {
                UIApplication uiApp = context.getUIApplication();
                uiApp.addMessage(new ApplicationMessage("UIAddGadget.label.urlError", new String[] { url }));
                return;
            }
            service.saveGadget(gadget);
            uiManagement.setSelectedGadget(name);
            context.addUIComponentToUpdateByAjax(uiManagement);
        }

        private boolean checkUrlExist(List<Gadget> gadgets, String url) {
            for (Gadget ele : gadgets) {
                String urlReRrocedure = GadgetUtil.reproduceUrl(ele.getUrl(), ele.isLocal());
                if (urlReRrocedure.equals(url)) {
                    return true;
                }
            }
            return false;
        }
    }

    public static class CancelActionListener extends EventListener<UIAddGadget> {

        public void execute(Event<UIAddGadget> event) throws Exception {
            UIAddGadget uiForm = event.getSource();
            UIGadgetManagement uiManagement = uiForm.getParent();
            Gadget selectedGadget = uiManagement.getSelectedGadget();
            if (selectedGadget != null) {
                uiManagement.setSelectedGadget(selectedGadget.getName());
            } else
                uiManagement.reload();
            event.getRequestContext().addUIComponentToUpdateByAjax(uiManagement);
        }

    }

}
